Son of Lieut.-Col. Thomas Esmonde, V.C., and Matilda Maria O'Kelly Esmonde. Husband of Mary Alice Philomena Mansfield, whom he married on 30 September 1913. His funeral from University Church, St. Stephen's Green, Dublin, took place on 14 October 1918.
He was travelling to London, on business, onboard the Leinster, which was sunk by two torpedoes, whilst enroute from Kingstown [now Dun Laoghaire] to Holyhead, Anglesey, Wales on the morning of 10 October 1918. It seems that his death was not registered.
His grave is unmarked. As the grave was not purchased by the family at the time, it has been recycled and the Gallagher family were subsequently buried here. Having bought the grave, they have put up the headstone.